From 95cf661534ff6c24e5dba4d156842a00b6af8499 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Sat, 8 Mar 2008 00:58:38 +0000 Subject: Implement x86 support for @llvm.prefetch. It corresponds to prefetcht{0|1|2} and prefetchnta instructions. llvm-svn: 48042 --- llvm/test/CodeGen/X86/prefetch.ll | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100644 llvm/test/CodeGen/X86/prefetch.ll (limited to 'llvm/test/CodeGen/X86/prefetch.ll') diff --git a/llvm/test/CodeGen/X86/prefetch.ll b/llvm/test/CodeGen/X86/prefetch.ll new file mode 100644 index 00000000000..bcc6e3ad3dd --- /dev/null +++ b/llvm/test/CodeGen/X86/prefetch.ll @@ -0,0 +1,15 @@ +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetchnta +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht0 +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht1 +; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse1 | grep prefetcht2 + +define void @t(i8* %ptr) nounwind { +entry: + tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 1 ) + tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 2 ) + tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 3 ) + tail call void @llvm.prefetch( i8* %ptr, i32 0, i32 0 ) + ret void +} + +declare void @llvm.prefetch(i8*, i32, i32) nounwind -- cgit v1.2.3